Railroad-crossing.



J. HERM.

RAILROAD CROSSING.

APPLICATION men MAR. 12. 1917.,

1,253,192., Patented. Jan. 8,1918.

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retains.

Specification of Letters Patent.

Patented Jan. s, as.

Application filed March 1.2, 1 91?. Serial No. 154,251. I

ing and particularly pertains to a crossing.

of the noiseless type.-

It is an object of this invention to provide a railway crossing which will be so constructed as to eliminate the jar incident to the passing of car wheels across its intersection.

Another object of this invention is to provide a railway crossing which is so constructed as to eliminate the grinding caused by the flanges of the wheels as they pass along the flanges of the rails.

itinother object of this invention is to provide a noiseless railway crossing which does not require the use of an actuating mechanism and will not become inoperative in a manner to block traffic.

A further object of this invention is to provide means whereby the wear upon the flan es of the car wheels will be lessened as they pass over an intersection or around a curve.

Other objects will appear hereinafter.

The invention is illustrated, by way of example, in the accompanying drawings in which:

Figure l is a view in plan illustrating the intersection of straight tracks and particularly discloses the position of the means for eliminating noise.

Fig. 2 is a view in plan illustrating the intersection of a straight track with a curved track and discloses the means for eliminating noise as well as the roller means for preventing grinding of the wheel flanges against the flanges of the track.

Fig. 3 is a view in section and elevation as seen on the line 3-3 of Fig. 1, disclosing the manner in which the intersecting tracks are relieved at their ends and adjacent the rails with which they intersect.

Fig. 4 is a view in transverse section as seen on the line 4-4: of Fig. 2 illustrating the manner in which the flanges of the car wheels bear against the flange rollers.

Referring more particularly to the drawings, 10 and 11 indicate parallel rails of a track which is here shown as intersecting rails 13 and of another track. its. shown in Fig. 1, thesefrails' are all straight and parallel z t-their point of intersection-and are provided with relieved portions 15 ad jacent the rails to which they lie at right angles downwardly to a point considerably below the level of the rail face and yet of a sufli cientsheight to guide the flanges 16 of the car wheels 17. The flanges of these wheels are so formed as to bear upon the floor of the rail groove 18. This groove is continuously formed, irrespective of the intersection, and will carry the wheel across the gap at the intersection without difficulty.

Reference being had to Fig. 2 of the drawings, it will be seen that rails 13 and let are intersected by curved rails 19 and 20. The intersecting ends of these rails are also relieved, as indicated at 15 upon Fig. 3 of the drawings. Additional means is provided the curved rails for eliminating noise and is here shown as a series of short rollers 21 which are mounted upon a curved mandrel 22 and positioned along the flange 23 of the track. The faces of these rollers combine to form a flange opposite the inner face of the track and will thereby form a flange groove As the wheels 17 pass along these grooves their flanges will bear upon the rollers and cause them to rotate due to the binding action of the flange in the groove upon the curved track. This rotation will eliminate the grinding action usually pro duced by the flanges against the inner flange of the rail and will thereby insure that the wheels of a car passing across a curved intersection will move without objectionable noise.

In operation, the car wheels will pass along the rails and when they reach the tapered faces 15 of the rails adjacent the intersections the weight of the car will be relieved from the upper face of the rail and will be carried by the circumferential face of the flange 16 as it rolls along the groove of the track. WVhen the wheel has crossed the intersecting rail it will not violently strike the edge of the rail over which it is to pass but will gradually ride up on it along a similar incline 15, thus eliminating the jar incident to crossing the intersection. Upon curved tracks the action will be the same with the additional desirable result which is obtained by the use of the rollers 21, as has been previously described.

This portion of the rail is tapered It will thus be seen that the noise eliminating means here provided for railway intersections is simple in construction and positive in its operation and is not liable to require repair.

WVhile I have shown the preferred construction of my track intersection as now known to me, it will be understood that various changes in the combination, construction, and arrangement of parts may be made by those skilled in the art without departing from the spirit of my invention.

I claim:

A track intersection, comprising pairs of intersecting rails, the ends of which are formed with tapered faces which extend downwardly toward the intersection, a flange formedupon said rails and adapted to provide a continuous'floor for the flange of car wheels passing therealong, whereby the wheels will cross the intersection without objectionable noise, and a series of rollers disposed along the side of the rails and against which the flanges of the wheels are adapted to bear in a manner to relieve the friction on the wheel flanges. v

In testimony whereof Ihave signed my name to this specification,

JOSEPH HERM.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, I). C. a 

